VERNON >> Gov. Jerry Brown proposed Wednesday spending $176.6 million to expedite and expand the testing and cleanup of homes, schools and parks near the now-shuttered Exide battery recycling plant in Vernon.

The proposal was outlined in a letter sent to the chairs of the Senate and Assembly budget and appropriations committees. The letter notes that the state will “vigorously pursue Exide and other potential responsible parties to recover the costs of this cleanup.”

“This Exide battery recycling facility has been a problem for a very long time,” Brown said. “With this funding plan, we’re opening a new chapter that will help protect the community and hold Exide responsible.”

According to the governor’s office, the proposal will ensure that properties within a 1.7-mile radius of the plant — including homes, schools, day care centers and parks, will be tested and have lead-contaminated soil removed.

The announcement came one day after the Los Angeles County Board of Supervisors voted to send a letter to Brown and legislative leaders, calling for them to allocate more funding for the cleanup effort, saying the $8.5 million originally proposed by the governor was inadequate.

“The state’s numbers indicate that the cleanup could cost hundreds of millions of dollars,” Supervisor Hilda Solis said. “At the rate proposed by the governor, this would take decades.”

In October, the board approved $2 million in funding to help speed the cleanup of contaminated soil around the now-closed Exide plant, with Solis saying the state was dragging its feet.

Exide agreed in March to close its lead-acid battery recycling plant and pay $50 million for cleanup of the site and surrounding neighborhoods.

Of that amount, $26 million is meant to be set aside for residential cleanup. As of August, Exide, which filed for bankruptcy in 2013, had paid $9 million into a trust and another $5 million was due to be paid in by March 2020, according to state officials.

As many as 1,000 homes may be found to have toxicity concentrated enough to qualify as hazardous waste, and the state has estimated that 5,000-10,000 homes may ultimately require some cleanup.

The plant, which produced a host of hazardous wastes, including lead, arsenic and benzene, operated for 33 years without a permanent permit. Efforts to upgrade the equipment and safety procedures repeatedly failed to meet environmental standards.

Though gaseous plant emissions are no longer an issue, lead contamination in the soil, which can cause developmental delays and cognitive impairments, remains a concern.

A public health spokesman has also cited the increased risk of cancer linked to other chemicals once emitted by the plant.

Boyle Heights and Maywood have the highest levels of residential contamination, but the area of exposure stretches to encompass roughly 2 million people, according to Angelo Bellomo, director of the county’s Environmental Health Division.